我想将数据从gridview导出到execl但是有execption [英] i want to export data from gridview to execl but there is execption

问题描述

我想将数据从gridview导出到execl但是



有execptionRegisterForEventValidation只能在Render（）期间调用;

如何解决这个问题?????

i want to export data from gridview to execl but

there is execption "RegisterForEventValidation can only be called during Render();"
how to slove this?????

protected void Button3_Click(object sender, EventArgs e)
{   
    ExportGridView2Excel(GridView1, "test.xls");
}

private void ExportGridView2Excel(GridView gridViewControl, string excelFileName)
{
    if (string.IsNullOrEmpty(excelFileName))
        throw new Exception("excelFileName is missing");
    if (!excelFileName.EndsWith(".xls"))
        excelFileName += ".xls";
    gridViewControl.AllowPaging = false;
    gridViewControl.AllowSorting = false;
    StringWriter tw = new StringWriter();
    HtmlTextWriter hw = new HtmlTextWriter(tw);
    Response.Clear();
    Response.ContentType = "application/vnd.ms-excel";
    Response.AddHeader(
        "content-disposition",
        "attachment;filename=" + excelFileName);
    gridViewControl.RenderControl(hw); // execption in this line
    Response.Write(tw.ToString());
    Response.End();
}
public override void VerifyRenderingInServerForm(Control control)
{
    return;
}

推荐答案

添加

EnableEventValidation="false"

。

Just添加

EnableEventValidation="false"

to你的页面指令。

如果你搜索了CP，你可以在这个Q& A中结束： RegisterForEventValidation只能在Render（）期间调用; [ ^ ]

祝你好运，

OI

to your page directive.
And if you searched CP you could have ended in this Q&A : RegisterForEventValidation can only be called during Render();[^]
Good luck,
OI

这篇关于我想将数据从gridview导出到execl但是有execption的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！